Case study: Lack of flexibility in European electrical systems leads to deteriorated grid management

How solar forecasting could avoid negative energy prices due to high renewable energy generation. The German market was affected on May 8th 2016 by an exceptional penetration of variable (solar and wind) renewable energy sources (RES) into the grid. The latter represented nearly 87% of the country’s electricity production, causing the occurrence of negative prices of about € -144.78 on the spot market throughout the